Australian Energy Market Operator

AEMO operates Australia's National Electricity Market (NEM), the interconnected power system in Australia’s eastern and south-eastern seaboard, and the Wholesale Electricity Market (WEM) and power system in Western Australia.

AEMO operates gas retail markets in New South Wales and the Australian Capital Territory, Queensland, South Australia, Victoria, and Western Australia. AEMO also operates wholesale gas markets in south-eastern Australia, those being the Declared Wholesale Gas Market in Victoria (DWGM), the Short Term Trading Market in Adelaide, Brisbane and Sydney (STTM), and the Gas Supply Hub (GSH), whose trading locations are based at Wallumbilla in Queensland, and Moomba in South Australia. AEMO also operates the Natural Gas Services Bulletin Board (GBB), and is system operator of the Victorian Gas Declared Transmission System. AEMO is also responsible for Gas Services Information functions in Western Australia.

In accordance with section 2.27 of the WEM Rules, by 1 June of each year Western Power must calculate and provide to AEMO Loss Factors for each connection point in its network. Where Western Power fails to provide AEMO with the Loss Factors by 1 June, AEMO must continue to use the equivalent Loss Factors from the previous year until such time as Western Power has provided AEMO with the new Loss Factors and those Loss Factors have taken effect.

AEMO must publish the Loss Factors within two business days after receiving them from Western Power. AEMO must also publish the time from which the Loss Factors will apply.

A Market Participant may apply to AEMO for a reassessment of any Loss Factor applying to a Scheduled Generator, Non-Scheduled Generator, Curtailable Load, Interruptible Load, Dispatchable Load, or Non-Dispatchable Load registered by that Market Participant in accordance with section 2.27.15 of the WEM Rules.

Loss Factors 2018 - 2019

The links below provide further information on the Loss Factors which apply from 1 July 2018.